4—12(x-y)+9(x-y)^2
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4—12(x-y)+9(x-y)^2
4(x+y)^2-12(x+y)(x-y)+9(+y)^2因式分解,
4+12(x-y)+9(x-y)^
9(x-y)-12(y-x)^2
已知X.x+y.y-4x+2y+5=0,求4X.X-12X Y+9Y.y的值
4-12(x-y)+9(x-y)^2 因式分解
4-12(x-y)+9(x-y)^2因式分解
9(x-y)^2+12(x-y)+4因式分解
9(x-y)^2-12(x-y)+4=快
4+12(x-y)+9(x-y)^2用因式分解
4(x+y)^2-12(x+y)+9因式分解
9-12(x+y)+4(x+y)^2因式分解
分解因式:4(x+y)^2-12(x+y)+9
12(x-y)-4-9(x-y)^2分解因式
4十12(x一y)+9(x+y)^2
4+12(x-y)+9(x-y)2次方不懂
4(x+y)^2-12(x+y)+9
因式分解:4+12(x-y)+9(x-y)^2